WHERE HAVE ALL THE HUMMINGBIRDS GONE? GLACIER LILIES AND BROAD-TAILED HUMMINGBIRDS OUT OF SYNC

Summary

... ; Billy Barr of the Rocky Mountain Biological Laboratory in Crested Butte , Colo. ; David Bertelsen of the University of Arizona ; and Nickolas Waser, affiliated with all three institutions. "Northern species, such as the broad-tailed hummingbird, are most...